Road train lighting

[tamiya fan]

I got a response from Julie today on pricing and as you say $$$$. Tried for a bulk discount, no good as they are small company. SS-Tronics has great stuff and company. But with the size of the fleet (ever growing) probably not. About the Bluetooth still working decoupled, that's just not right, not good.

I've decide for now to go with optocouplers, keep all things consistent. I ordered up the 2 kinds mentioned, 1 for taillights (higher ma) and 2 for the 2 turn signals (lower ma).

You wouldn't happen to have a circuit schematic would you? Quick drawing or something? IE: resister, etc.. For optocoupler (Not leds) just opto's

Thanks for all the advice!!!